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2.1 A Resolution Crystal Structure of O-Acetylserine Sulfhydrylase (OASS) Holoenzyme From MYCOBACTERIUM TUBERCULOSIS in Complex with the Inhibitory Peptide DFSI
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2Q3B pdb entry 2Q3B, Holoenzyme
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 8 293 0.1 M HEPES, 80% MPD, 4 mM DFSI-peptide, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 3.61 65.96
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 72.458 α = 90 b = 72.458 β = 90 c = 178.936 γ = 90
Symmetry Space Group P 41 21 2
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 110 CCD ADSC QUANTUM 210 2007-03-03 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE ID14-1 0.934 ESRF ID14-1
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) Net I Over Average Sigma (I) Redundancy Number Reflections (All) Number Reflections (Observed) Observed Criterion Sigma (F) Observed Criterion Sigma (I) B (Isotropic) From Wilson Plot 1 2.1 59.66 93.2 0.089 11.5 5.1 26571 26571 31
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.1 2.21 96.2 0.352 3.3 5 3941
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Number Reflections (All) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT pdb entry 2Q3B, Holoenzyme 2.1 51.23 25171 25171 1341 92.28 0.18826 0.18826 0.18723 0.1936 0.20747 0.2145 RANDOM 36.734
Temperature Factor Modeling Anisotropic B[1][1] Anisotropic B[1][2] Anisotropic B[1][3] Anisotropic B[2][2] Anisotropic B[2][3] Anisotropic B[3][3] 1.94 1.94 -3.89
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 33.041 r_dihedral_angle_4_deg 16.614 r_dihedral_angle_3_deg 12.736 r_angle_other_deg 6.9 r_dihedral_angle_1_deg 4.835 r_scangle_it 2.818 r_scbond_it 1.588 r_angle_refined_deg 1.195 r_mcangle_it 1.002 r_mcbond_it 0.587
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 33.041 r_dihedral_angle_4_deg 16.614 r_dihedral_angle_3_deg 12.736 r_angle_other_deg 6.9 r_dihedral_angle_1_deg 4.835 r_scangle_it 2.818 r_scbond_it 1.588 r_angle_refined_deg 1.195 r_mcangle_it 1.002 r_mcbond_it 0.587 r_nbtor_refined 0.299 r_symmetry_vdw_refined 0.216 r_nbd_refined 0.192 r_xyhbond_nbd_refined 0.14 r_chiral_restr 0.13 r_symmetry_hbond_refined 0.109 r_nbd_other 0.093 r_nbtor_other 0.047 r_bond_refined_d 0.009 r_gen_planes_refined 0.004 r_bond_other_d 0.003
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2276 Nucleic Acid Atoms Solvent Atoms 163 Heterogen Atoms 8
Software Software Software Name Purpose REFMAC refinement ADSC data collection MOSFLM data reduction SCALA data scaling MOLREP phasing